Hey I’m having an issue now where the car won’t start after I swapped the harness. Cranks but no start. Reason for swapping the harness was every wire was pretty much exposed last thing I wanted was short or a fire in the bay. All connectors have been plugged in including the grounds but no luck. Had wires,plugs,ignition coil replaced before. Clueless

 

Check if you have any revs showing on the tach when cranking.

 

No revs are registering while cranking. Battery is charged etc. crank sensor failure maybe?

 

Car started with previous harness but after the swap the crank no start symptom happened.

 

The no revs shown on tach usually means crank sensor or crank sensor plug/connection is faulty.

 

Could be the cause of your poor running issue on your other thread?

 

It’s a possibility. I have a new connector that I will solder in today. I seen the wire was exposed and had some of the copper of the wire missing. I’ll update later today. Second scenario will be to replace the sensor with an OE/OEM piece.

 

If youre not obsessed with originality, you can probably install an affordable sensor designed for the X300 ...the XJ40 sensor is ridiculously overpriced and is a three wire type where the X300 part is identical but with only two wires, signal and ground. The XJ40 sensor has a third wire which is just a shield. I doubt that shield makes much difference but if it does you could always shield the two wire section, shrink-wrap it and connect it to the car's third pin.

Just a hack, but it's what I would do.

 

Never thought that’ll be possible ?! Will it fit and function the same? What should i do with the third wire?

 

Both the XJ40 and X300 units are simple hall sensors and are physically identitical. The only difference is that the X300 unit eliminates the shielding wire. Probably the XJ40 shielding is employed to supress radio interference caused by the distributor. As the X300 doesn't have a distributor the sensor doesn't need the shield. It may not even be necessary on the XJ40, but if it is, you can modify the X300 unit to duplicate the XJ40 setup.
Take the 2 wire output from the X300 sensor and create a shield wire by wrapping the length with some other wire/mesh/foil. Mesh from a coax cable or the old sensor would probably be best. Sleeve the entire length in a tube of shrink wrap. Solder the shield wire you just created to the shield wire inside the car harness. Connect connect the two "working" wires to your existing harness plug. The wiring diagram will show you which wire is which.

I haven't done this BTW; but can't see why it wouldn't work. The dotted line in the wiring diagram below is the "third wire" - the shield.

Good luck!

 

Cranks over perfectly ecm connector was loose. Problem solved. Car cranks over instantly with new cps. Just what I needed. Still have an issue with a rough idle but that for my previous post. Thanks!